Test apparatus and test method based on dfdau

Abstract

The present invention relates to a test apparatus based on DFDAU (Digital Flight Data Acquisition Unit), comprising: a simulation signal generation portion; and a test portion; wherein, the simulation signal generation portion comprises: an input interface, which receives test data; a simulation signal generation module, which generates simulation signal according to the test data; and an output interface, which is adaptive to be connected to one end of one or more signal transmission device to be tested and output the simulation signal; wherein, the test portion comprises: wiring extension apparatus, which is used to form a gating wiring apparatus and is adaptive to be connected to the other end of the one or more signal transmission devices to be tested, and receive the simulation signal passing through the one or more signal transmission devices to be tested; DFDAU, which is adaptive to receive simulation signal from the wiring extension device, and obtain the transmitted test data; a comparison module, which is adaptive to compare the test data and the transmitted test data.

Description

TECHNICAL FIELD[0001]The present invention relates to the field of aviation technology, in particular to a test apparatus and method based on digital flight data acquisition unit (DFDAU).BACKGROUND ART[0002]In order to monitor and analyze aircraft condition, a large number of sensors are mounted on the aircraft. Those sensors are used to detect and collect massive data of aircraft condition such as acceleration, air speed, altitude, airfoils configurations, external temperature, cabin temperature and pressure, engine performance and so on. Those data of aircraft condition play a very important role in flight safety.[0003]When an aircraft malfunctions, data of aircraft condition reflecting operating status of an aircraft will be abnormal. Various reasons contribute to the malfunction of an aircraft. Therefore, sometimes it is difficult to locate malfunction of an aircraft. Specifically, malfunction might occur to component of aircraft itself, to sensors, and also to signal transmissi...

AI Technical Summary

Benefits of technology

The present invention provides a test apparatus for testing aircraft signal transmission devices based on DFDAU (Digital Flight Data Acquisition Unit). The test apparatus includes an simulation signal generation portion and a test portion. The simulation signal generation portion generates a simulation signal based on the test data and sends it to the test portion through one or more signal transmission devices to be tested. The test portion comprises a wiring extension device to form a gating wiring apparatus that receives and passes through the simulation signal. The comparision module compares the test data with the transmitted test data to verify if the signal transmission devices are functioning properly. The technical effects include efficient and accurate testing of signal transmission devices without the need for live aircraft testing, reduced test time and cost, and improved safety.

Problems solved by technology

When an aircraft malfunctions, data of aircraft condition reflecting operating status of an aircraft will be abnormal.

Therefore, sometimes it is difficult to locate malfunction of an aircraft.

Specifically, malfunction might occur to component of aircraft itself, to sensors, and also to signal transmission device for transmitting data of aircraft condition measured by sensors.

On the other hand, malfunction also might occur to control system of an aircraft.

It is also difficult to locate malfunction of operating system of an aircraft.

Specifically, malfunction might occur to moving parts of an aircraft, to control command input device, and also to control signal transmitting device.

In certain cases, malfunction also might occur to DFDAU (Digital Flight Data Acquisition Unit).

In prior art, there is no such instrument specifically for testing a signal transmission device or DFDAU.

Besides, since the type of measuring signals and control signals in an aircraft is very complicated, the test of a signal transmission device of an aircraft also becomes complicated and difficult.

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